Antenna arrangement with wave trap and user equipment

Patent metadata

Field	Value
Publication number	US-11228094-B2
Application number	US-201816979267-A
Country	US
Kind code	B2
Filing date	Apr 5, 2018
Priority date	Apr 5, 2018
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

An antenna arrangement for a user equipment is disclosed. The antenna arrangement comprises a first antenna element configured to operate at frequencies above a limit frequency, a second antenna element configured to operate at frequencies below the limit frequency, and a wave trap configured to resonate within a frequency band above the limit frequency. The wave trap is connected to the second antenna element.

First claim

The invention claimed is:

1. An antenna arrangement for a user equipment, the antenna arrangement comprising:
a first antenna element configured to operate at frequencies above a limit frequency,
a second antenna element configured to operate at frequencies below the limit frequency, and
a wave trap configured to resonate within a frequency band above the limit frequency, wherein
one end of the wave trap is connected to the second antenna element, and the other end of the wave trap is an open end.

2. The antenna arrangement according to claim 1 , wherein the wave trap is galvanically connected to the second antenna element.

3. The antenna arrangement according to claim 1 , wherein the wave trap is connected to the second antenna element via a capacitive coupling and/or inductive coupling.

4. The antenna arrangement according to any one of the preceding claim 1 , wherein an open end of the first antenna element is directed towards an open end of the second antenna element.

5. The antenna arrangement according to claim 4 , wherein the open end of the first antenna is arranged adjacent to the open end of the second antenna element.

6. The antenna arrangement according to claim 4 , wherein the open end of the wave trap is directed towards the open end of the first antenna element.

7. The antenna arrangement according to claim 1 , wherein the limit frequency is a frequency within a range of 800 MHz 1.2 GHz.

8. The antenna arrangement according to claim 1 , further comprising a ground plane, wherein the first and second antenna elements are connected to the ground plane.

9. The antenna arrangement according to claim 1 , wherein the wave trap comprises a stub.

10. The antenna arrangement according to claim 9 , wherein the first antenna element is configured to operate at least at a first wavelength, and wherein the stub has a length of a fraction of the first wavelength.

11. The antenna arrangement according to claim 9 , wherein the first antenna element is configured to operate at least at a first wavelength, and wherein the stub has a length of a quarter of the first wavelength, or of half the first wavelength.

12. The antenna arrangement according to claim 1 , further comprising a second wave trap.

13. The antenna arrangement according to claim 12 , wherein the second wave trap is connected to the second antenna element.

14. The antenna arrangement according to claim 1 , further comprising a third antenna element configured to operate at frequencies above the limit frequency.

15. The antenna arrangement according to claim 1 , wherein the open end of the wave trap is directed towards an open end of the first antenna element;
the open end of the wave trap is arranged in line with an open end of the second antenna element; and
the open end of the first antenna element faces the open end of the second antenna element.

16. The antenna arrangement according to claim 1 , wherein
a length of the wave trap extends in a direction from the open end of the wave trap; and
a length of the second antenna element extends in the direction from an open end of the second antenna such that the length of the second antenna extends in parallel with the length of the wave trap.

17. The antenna arrangement according to claim 1 , wherein each of the first and second antenna elements is formed by an inverted-F antenna.

18. A user equipment comprising a housing, and a first transceiver circuitry and a second transceiver circuitry arranged inside the housing, wherein
the first transceiver circuitry is configured to handle a first frequency band above a limit frequency and the second transceiver circuitry is configured to handle a second frequency band below the limit frequency, and wherein
the user equipment comprises an antenna arrangement wherein
the antenna arrangement comprises:
a first antenna element configured to operate at frequencies above the limit frequency,
a second antenna element configured to operate at frequencies below the limit frequency, and
a wave trap configured to resonate within a frequency band above the limit frequency,
wherein one end of the wave trap is connected to the second antenna element, and the other end of the wave trap is an open end.

19. The user equipment according to claim 18 , wherein the housing comprises a conductive peripheral structure, and wherein the first and second antenna elements form part of the conductive peripheral structure.

20. The user equipment according to claim 19 , further comprising a third antenna element configured to operate at frequencies above the limit frequency, wherein the third antenna element forms part of the conductive peripheral structure.

Assignees

• Huawei Tech Co Ltd

Inventors

• Ilvonen Janne
• Tian Ruiyuan
• Xu Changnian
• Dong Li

Classifications

• H04B1/3833

  Hand-held transceivers · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q1/521

  reducing the coupling between adjacent antennas · CPC title

• H01Q5/321

  within a radiating element or between connected radiating elements · CPC title

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title